Home / 3,923-5,884.50-1,187

Finding the Fourth Proportional to 3,923, 5,884.50 and 1,187

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Solution

The fourth proportional to 3,923, 5,884.50 and 1,187 is: 1,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923 : 5,884.50 = 1,187 : x
  2. Step 2: Convert to fraction form
    3,923/5,884.50 = 1,187/x
  3. Step 3: Cross multiply
    3,923x = 5,884.50 × 1,187
  4. Step 4: Simplify right side
    3,923x = 6,984,901.50
  5. Step 5: Solve for x
    x = 6,984,901.50/3,923
  6. Step 6: Final answer
    x = 1,780.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.